George Mason University Utility Distribution System

Project Summary

George Mason University tasked DXI with replacing the University’s underground chilled water piping, including excavation, removal of portions of the existing transite piping, installation of new chilled water lines, backfilling, and final grading of affected areas. The University divided the project into eight separate phased construction areas, each with a specific timeframe based on the academic calendar and campus events.

More than 9,000 linear feet of trench were excavated through a multitude of existing utilities, and approximately 18,000 linear feet of steel chilled water lines, ranging in size from 6” to 30” in diameter, were installed.

One of the most challenging aspects of the project was navigating the numerous existing utilities across the campus, many of which were undocumented and at times required hydro excavation to locate and expose safely.

Another ongoing challenge was working on an active campus with more than 34,000 students. This affected all aspects of the work, including noise restrictions, deliveries, material handling, and even parking for our crews. To address these constraints, DXI operated multiple night crews to take advantage of reduced pedestrian activity and lighter traffic on campus streets.